User-Agent

zde-proxy-syn-check/1

first seen 2026-11-01 20:29 · last seen 2026-11-02 11:33 · JSON

Last 7 days (102 observations)

Distinct clients per day (last 30 days, peak 5/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

Browser / clientzde-proxy-syn-check 1
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
t12d2109h1_76e208dd3e22_7af1ed941c26102

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0, curl 7.88.1, curl 8.21.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.102

TCP SYN (p0f)

fingerprintco-occurrences
4:114+14:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:03
4:108+20:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:03
4:112+16:0:1460:mss*44,8:mss,nop,ws,sok,ts:df,id+:03
4:118+10:0:1452:65535,8:mss,nop,ws,nop,nop,sok:df,id+:03
4:112+16:0:1460:8192,2:mss,nop,ws,nop,nop,sok:df,id+:03
4:117+11:0:1452:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:03
4:118+10:0:1452:mss*44,8:mss,nop,ws,sok,ts:df,id+:03
4:111+17:0:1460:65535,8:mss,nop,ws,sok,ts:df,id+:03
4:112+16:0:1460:65535,8:mss,nop,ws,nop,nop,sok:df,id+:02
4:116+12:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1460_820
64240_2-1-3-1-1-4_1452_813
65535_2-1-3-1-1-4_1460_86
8192_2-1-3-1-1-4_1460_26
65535_2-1-3-1-1-4_1452_85
65535_2-1-3-4-8_1460_84
64240_2-1-3-4-8_1460_84
64240_2-1-3-1-1-4_1412_84
64240_2-1-3-4-8_1452_84
64240_2-1-3-1-1-4_1440_83

Country

fingerprintco-occurrences
RU · Russia99
GB · United Kingdom2
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS12389 · PJSC Rostelecom28
AS42610 · OJSC National Cable Networks4
AS12958 · T2 Mobile LLC3
AS24955 · JSC "Ufanet"3
AS12714 · PJSC MegaFon3
AS8359 · MTS PJSC3
AS31257 · Orion Telecom LLC3
AS41275 · Lovitel LLC2
AS8402 · PJSC "Vimpelcom"2
AS197078 · Yarnet Ltd2

TLS supported groups

fingerprintco-occurrences
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.102